Repairing Large Holes In Concrete Walls

Tap the chisel with a hammer and chip downward to the back wall of the block creating a larger.

Repairing large holes in concrete walls. The only way to repair foundation wall cracks successfully is by the injection process. If this is just a wall above ground on both sides you can mix up some concrete patch and fill the hole back in. Lay the chisel on the edge of the hole and point it downward at a 45 degree angle into the block. Injecting a typical wall crack with an epoxy or urethane resin is done under pressure pushing the material from the inside all the way to the outside.

Concrete is is a lot coarser and includes large rocks and gravel. You can use mortar mix to repair masonry but it is about 4 5x as expensive and the finish isn t that much nicer. Holes this large make that type of fix impractical. Deep patch is solid concrete repair product for patching large holes in concrete surfaces.

If the holes were smaller i would use hydraulic cement which actually slightly expands as it cures with about a 3 4 minute working time. If you do have hollow cinder block walls then yes you will need to use a filler like spray foam for areas the holes go all the way into the center. The injection process fills the crack from top to bottom from inside to outside. If your aim is to make the wall look better a smooth surface is also easier to paint.

For that size vertical hole you may need to brace a board over the hole to hold in the patch until it dries. If this is a retaining wall you need to fix the problem ont he other side of the wall first. Patching such holes is a necessary part of keeping your concrete foundation wall in good repair. Concrete mix is similar to mortar mix the stuff i used to pour the floor of my shower but it is made up of sand and cement only.

Surecrete s solid cement filler is a single component just add water cement based chemical patching compound system providing a patch that goes from 1 8 0 32 cm and up. Or rather one very large thing.